Accession Number : ADA198596


Title :   The Synthesis of Carborane-Oxetane Monomers and their Polymerization


Descriptive Note : Quarterly progress rept. no. 6, 1 Apr-30 Jun 88,


Corporate Author : AEROJET SOLID PROPULSION CO SACRAMENTO CA


Personal Author(s) : Manser, G E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a198596.pdf


Report Date : 11 Jul 1988


Pagination or Media Count : 14


Abstract : Modern rocket propellants, gun propellants, and explosives are an adaptation of the basic concept of a formulation consisting of a solid oxidizer and fuel held in a polymeric matrix. In 1978, we embarked on a research effort to synthesize energetic polymeric binders specifically designed for propellant applications. A modified cationic polymerization technique was developed, which allowed the synthesis of polymers to predetermined molecular weight and functionality, and the concept of energetic polyoxetanes was presented. Further work has now resulted in nitrate ester, nitramine polymers, copolymers, and recently nitro, cubane and carborane polymers. The latter is the subject of this paper. Boron or boron compounds have been used as a burning rate modifier and as a metal fuel source in solid propellant motors. Migration of these chemicals in the propellant grain is a continuous and serious problem. We proposed that a urethane curable polyether glycol with a carboranyl functionality would solve migration problems. Oxetane-carboranes would be good candidates as monomers for these carboranyl pendant polymers. These monomers could be homopolymerized or co-polymerized with other oxetanes for specific properties. This paper describes the synthesis, characterization, and polymerization of oxetane-carborane monomers.


Descriptors :   *POLYMERIZATION , *MONOMERS , *BINDERS , *CARBORANES , *OXETANES , PROPELLANTS , FUELS , OXIDIZERS , MIGRATION , CURING , ESTERS , BORON , ENERGETIC PROPERTIES , GUN PROPELLANTS , POLYETHERS , NITRAMINES , ROCKET PROPELLANTS , SOLID PROPELLANTS , PROPELLANT GRAINS , NITRATES , URETHANES , GLYCOLS , BORON COMPOUNDS , SOLID ROCKET PROPELLANT BINDERS , EXPLOSIVES , COPOLYMERS , SYNTHESIS(CHEMISTRY) , MOLECULAR WEIGHT , CATIONS , POLYMERS


Subject Categories : Organic Chemistry
      Polymer Chemistry
      Ammunition and Explosives
      Solid Rocket Propellants


Distribution Statement : APPROVED FOR PUBLIC RELEASE